Swing-door-operating mechanism



Nov. 19, 1929. J. A. BRUBAKER SWING DOOR OPERATING MECHANISM Filed Mafoh 9, 1925 2 Sheets-Sheet l INVENTEIIK :5

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MTTUITNEY Patented Nov. 19, 1929 UNITED STATES PATENTFOFFICE JOHN A. BRUBAKERQOF TOLEDO, OHIO, ASSIGNOR TO THE HAUGHTON ELEVATOR'dz MACHINE COMPANY, OF TOLEDO, OHIO, A CORPORATION OF OHIO SWING-DOOR-OPERATING MECHANISM Application filed March 9, 1925. Serial No. 14,115.

This invention relates to door or gate actuating mechanisms.

This invention has utility when incorporated in connection with power actuators for vertical axis swinging doors, as for elevator landings.

Referring to the drawings:

Fig.1 is a fragmentary view of an embodiment of the invention in connection with an elevator at the landing doors therefor;

Fig. 2 is a plan view, with parts broken away, of the power drive or motor for actuating the doors in the disclosure of F ig. 1;

Fig. 3 is a section on the line IIIIII,

Fig. 4 is a wiring diagram of the control connections for the motor;

Fig. 5 is a plan view of the door control mechanism of Fig. 1 as connected to the doors, in closed position of the doors;

Fig. 6 is a view similar to the showing in Fig. 5 with the doors in opened position; and

Fig. 7 is a view in side elevation looking at the closed doors from the actuator mecha- 1 nism or landing side.

' In elevator well 1 is mounted elevator car 2 having hoisting cables 3. In this car 2 is controller 4to which extends supply line 5 in current control for operating the driving motor for the elevator. This supply line 5 has interlock switches 6 closed to permit effective operation of the controller 4, when the landing doors in the elevator shaft 1 are all closed. At'landings 7 are ways 8 shown as having jambs 9 opposing each other. Mounted on these jambs 9 arehinges 10 providing vertical axis pivots for primary door leaves 11 thus directly hinged to the jambs 9 and disposed in the way 8 in close proximity to the line of travel of the car 2. Secondary leaves 12, are connected to the primary leaves 11 by hinges 13. Accordingly, in this disclosure the way 8 is closed by a pair of folding doors.

Upon the side of each primary door leaf 11 away from the elevator shaft 1, as to each of said doors, is mounted face plate 14 held in position by a pair of carriage bolts 15 each extending through the door 11, and plate 16 to be engaged by wing nuts 17 This plate 14 has snug fitting openings 18 as to'these bolts 15. This plate 14 has, remote from the hinge 10, lug 19extending away from the plane of the door to carry adjustable screw 20 as locked in position by nuts 21. This screw extends to engage. lug, 22 of bearing block 23 having slots'24 engagedby the carriage bolts 15. V

The bearing 23 has link 25 mounted therein and connected to arm '26 mountedby fixed bearing 27 on bracket 28. This bracket 28 is outward from the jamb 9 on the side thereof away from the elevator shaft 1, and is so disposed that the bearing 27, as a fulcrum, is in the direction of the open door from the hinges 10 and preferably beyond the plane of said opened door. The arm 26 is onearm of the lever having the fulcrum or bearing 27. F ixed therewith is second arm 29 from w rich extends linksection 30 having adjustable ofi'set connection 31 with section32 and extending "to bearing 3'3 of toggle lever 34 mounted on shaft 35. Fixed with this lever 34 is worm wheel 36 in mesh with worm 87 on shaft SS-having fast therewith gear '39 in mesh with pinion 40 fast on shaft 41 of motor 42. Collar 43 serves to pack the-shaft 38 for allowing the worm gearing to run in oil. Thebcarings 44 mount the worm shaft 38. This shaft 38 is adjustable by screw-45 in cap 46 remote from the gear 39. Bearings 47 48, are adjustable by set screws 49 for determining the position of the worm wheel 36 as to the worm 37 by adjusting the shaft 35 vertically in housing 50. Lubricant may be supplied to this housing 50 by filler opening 51 andwithdrawn therefrom by plug 52.-

Thelever 84 has its limits of swing slightly less than 180, and carries therebelow lug 53 which in door closing position abuts yieldable stop 54 as arm carried by lever 34: moves to close interlock switch 6. Interlock switch 6 is normally held open by gravity. In the door opening travel of lever 84, the lug 58 strikes yieldable stop 56 and stalls the motor without disconnecting the power therefrom. These connections from the doors 11 show, as described, one to bearing 33 on the lever 34 and the other to bearing on the lever 34, and as this lever 34 swings from its toggle or dead center approximating position, there is had a slow movement of the arm 29 which, as the constant angular speed of rotation of the lever continues, increases the intermediate speed of the arm 29 and decreases the terminal speed of such arm 29.

Above the way 8 and away from the hatchway side of the doors 11 is a track 57 parallel with the closed position of the doors 11,12. In this track 57 are rollers 58 mounted by brackets 59 from the respective secondary leaves12 of the doors. The link 25 connects the'door 11 to the arm 26,.which is rigidly connected to the arm 29 and consequently moves with the same velocity. Accordingly,

the link 25 to the door 11 starts the door 11 slowly for opening,

, gives it a quick turn in the middle of the travel and slows it up before the door is fully opened as folded against the jamb 9. In this swinging of the door 11 into open position, the roller 58 so directs the door 12 that it is folded as to .its elevator well side against the elevator well side of the door 11. I v

, The doors as herein disclosed may be placed snugly up against the line of travel of the elevator car in the elevator well; The operating mechanism'may be clear for full head room as to the way 8. The worm speed reduction, as well as the toggle approximating dead center position of the lever 3d at its fully opened and fully closed positions, may

effectively lock the doors against disturbance other than through theoperation of the motor 4 2. The operation is further such that should any object fall to intercept the travel of the doors in their opening or closing, or should any one attempt to pass or be in the way ofthe doors, the resistance thereby afforded is such that the motor will be stalled and the doors stopped without injury to the mechanism.

Thedoor control iseffected by means of switch .61 (Figs 1 and 4:) 'located in the well P .adj acent the'landing and normally 1Il neutral position. As thrown upward this switch c onnects. power lines 62, 63 to the motor 12' hav- "ing third line 64; directly thereto. For closing the doors the switch61 instead of being thrown upwardly is thrown downwardly to reverse the motor, and must be held in this position to maintainreversedirection of the motor. When released, the switch will automatically returnto neutral position as actuated by spring 65 (Fig. 1).

In adjacent landing doors as along a bank of elevators, the offset connection 31 permits such disposal of the brackets 28 on the column 66 between the doors or landings as shown in Fig. 7 so that there may be swinging of even both doors at the same time into open position without the arms 26, 29 of one door interfering with the arms 26, 29 of an adjacent door.

Although the connection 31 may determine the range of throw with considerable nicety, the actual aligning for full closing and full opening position of the doors as to slight variable travel therebetween is accurately taken .care of by positioning the bearing 23, and

locking it in its adj usted'position by the nuts 21 of the set screw 20.

111 the event power supply is cut off, and the elevator is stalled in the well or shaft 1 with doors closed, those in the elevator thus trapped may readily obtain releasethrough the landing doors by spinning off thumb nuts 17 and thrusting bolts 15 out of a door 11, thus releasing the door 11 with its leaf 12 for opening at a landing-byhand. V

In the structure of this disclosure, the power drive is compact. .It is directly and simply connected. It. has adaptation for ready installation in various dimensional landingways. It permits placing the doors in such landing ways in close proximity to the line of travel of the car as a safety measure. The swinging'of the doors is nicely controlled against concussion at starting or stop-- ping and with maintained rapidity for coinplete operation. The motor 42' is preferably ingand with'current therein for ten minutes to one and one-half hours.

i hat is claimed and it is desiredfto secure by United States Letters Patent is 1. The combination with a way,'of a door hinged to the inner edge of the way'and adapted to swing outwardly, a bracket mounted on and extending outwardly from saidway approximately in the'plane in which the upper edge of the door swings, a'rock shaft mounted in said bracket, two arms rigidly secured to saidrock shaft, a link connecti'ng one of said arms to the door, anda link connectin'g'the other of said arms to a source of power, said rock shaft being at 'a su fficient distance outside of the way to' permit said arms to swing between the rock shaft and the edge of the way.

2. The combination with a way, of a door hinged to swing in said way, a bracket mounted on said way approximately on a level with the top of said door and on the side of the way towards which the door is adapted to swing when opening, a rock shaft mounted in said bracket, two arms rigidly secured to said rock shaft and extending therefrom toward the door when the latter is closed, a link connecting one of said arms to the door, and means connected to the other arm for swinging the same in a sector between the rock shaft and the plane of the doorway to open or close said door.

The combination with a Way, of a pair of doors hinged to opposite sides thereof, two brackets mounted respectively at the sides of said way and projecting therefrom on the side towards which the doors swing when opening, a rock shaft mounted in each bracket, two arms rigidly connected to each rock shaft and extending therefrom toward the respective doors when the latter are closed, a power shaft mounted between the rock shafts and nearer to the plane of the doorway than are the rock shafts, means connecting the power shaft to one arm of each rock shaft to rock both of said shafts simultaneously and links connecting the other arms of the rock shafts to the respective doors.

4. The combination with a way, of a pair of doors hinged to opposite sides thereof, two brackets mounted respectively at the sides of said way and projecting therefrom on the side toward which the doors swing when opening, a rock shaft mounted in each bracket, two arms rigidly connected to each rock shaft, a power shaft mounted between said rock shafts, a lever secured to said power shaft and having arms extending in opposite directions therefrom, pitmen connecting the lever arms respectively to one arm of each rock shaft, each of said pitmen being made up of two sections arranged in offset relation to one another and relatively adjust-able longitudinally to vary the length of the pitman, and links connecting the other arms of the rock shafts to the respective doors.

5. The combination of a way, a door hinged to swing in the way, a rock shaft parallel with the axis of the hinges of the door and mounted at one side of the way adjacent a plane passing through the axis of the hinges and perpendicular to the closed door, means to rock the shaft, an arm on the side of the shaft towards the Way, and a link connecting the arm to the door, the rock shaft being farther from the axis of the hinges than is the point of attachment of the link to the door.

6. The combination of a way, a door hinged to swing in the way, a rock shaft parallel with the axis of the hinges of the door and mounted at the side of the way to JOHN A. BRUBAKER. 

